Spherical, rolling magnet generators for passive energy harvesting from human motion

TitleSpherical, rolling magnet generators for passive energy harvesting from human motion
Publication TypeJournal Article
Year of Publication2009
AuthorsBowers, B., and D. P. Arnold
JournalJ. Micromech. Microeng.
Volume19
Pagination094008
Date Published09/2009
Other Numbers7 pages
Abstract

In this work, non-resonant, vibrational energy harvester architectures intended for human-motion energy scavenging are researched. The basic design employs a spherical, unidirectionally-magnetized permanent magnet (NdFeB) ball that is allowed to move arbitrarily in a spherical cavity wrapped with copper coil windings. As the ball rotates and translates within the cage, the time-varying magnetic flux induces a voltage in the coil according to Faraday

URLhttp://dx.doi.org/10.1088/0960-1317/19/9/094008
DOI10.1088/0960-1317/19/9/094008